[arm] Make 'auto' the default FPU selection option.

[gcc.git] / libgcc / configure

diff --git a/libgcc/configure b/libgcc/configure
index 3c0af1c4907dfb9da52dfceb07d2be2e28d49438..45c459788c3da5bc077883e7b38243e54420ef8d 100644 (file)
--- a/libgcc/configure
+++ b/libgcc/configure
@@ -561,6 +561,7 @@ enable_execute_stack
 asm_hidden_op
 extra_parts
 cpu_type
+get_gcc_base_ver
 thread_header
 tm_defines
 tm_file
@@ -676,6 +677,7 @@ with_system_libunwind
 enable_explicit_exception_frame_registration
 with_glibc_version
 enable_tls
+with_gcc_major_version_only
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1330,6 +1332,8 @@ Optional Packages:
   --with-system-libunwind use installed libunwind
   --with-glibc-version=M.N
                           assume GCC used with glibc version M.N or later
+  --with-gcc-major-version-only
+                          use only GCC major number in filesystem paths
 
 Some influential environment variables:
   CC          C compiler command
@@ -4775,6 +4779,8 @@ case ${host} in
 # software libraries, and whether the assembler can handle xsaddqp
 # for hardware support.
 powerpc*-*-linux*)
+  saved_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for PowerPC ISA 2.06 to build __float128 libraries" >&5
 $as_echo_n "checking for PowerPC ISA 2.06 to build __float128 libraries... " >&6; }
 if test "${libgcc_cv_powerpc_float128+set}" = set; then :
@@ -4782,8 +4788,7 @@ if test "${libgcc_cv_powerpc_float128+set}" = set; then :
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#pragma GCC target ("vsx")
-     vector double dadd (vector double a, vector double b) { return a + b; }
+vector double dadd (vector double a, vector double b) { return a + b; }
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
   libgcc_cv_powerpc_float128=yes
@@ -4795,6 +4800,7 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_float128" >&5
 $as_echo "$libgcc_cv_powerpc_float128" >&6; }
 
+  CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware"
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for PowerPC ISA 3.0 to build hardware __float128 libraries" >&5
 $as_echo_n "checking for PowerPC ISA 3.0 to build hardware __float128 libraries... " >&6; }
 if test "${libgcc_cv_powerpc_float128_hw+set}" = set; then :
@@ -4802,12 +4808,11 @@ if test "${libgcc_cv_powerpc_float128_hw+set}" = set; then :
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
-#pragma GCC target ("vsx,power9-vector")
-     #include <sys/auxv.h>
+#include <sys/auxv.h>
      #ifndef AT_PLATFORM
      #error "AT_PLATFORM is not defined"
      #endif
-     vector unsigned char (vector unsigned char a, vector unsigned char b)
+     vector unsigned char add (vector unsigned char a, vector unsigned char b)
      {
        vector unsigned char ret;
        __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b));
@@ -4826,6 +4831,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgcc_cv_powerpc_float128_hw" >&5
 $as_echo "$libgcc_cv_powerpc_float128_hw" >&6; }
+  CFLAGS="$saved_CFLAGS"
 esac
 
 # Collect host-machine-specific information.
@@ -5084,6 +5090,21 @@ esac
 
 
 
+# Determine what GCC version number to use in filesystem paths.
+
+  get_gcc_base_ver="cat"
+
+# Check whether --with-gcc-major-version-only was given.
+if test "${with_gcc_major_version_only+set}" = set; then :
+  withval=$with_gcc_major_version_only; if test x$with_gcc_major_version_only = xyes ; then
+        get_gcc_base_ver="sed -e 's/^\([0-9]*\).*\$\$/\1/'"
+      fi
+
+fi
+
+
+
+
 # Substitute configuration variables